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US 8,149,179 B2Granted
Low loss variable phase reflect array using dual resonance phase-shifting element
AssigneeRaytheon Company
InventorDavid D. Crouch
Life of this patent
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Abstract
There is disclosed a reflect array including a dielectric substrate having a first surface and a second surface. The first surface may support an array of phase-shifting elements. The second surface may support a conductive layer. At least some of the phase-shifting elements may be dual resonance phase-shifting elements.
Claims15
A reflect array, comprising
- a dielectric substrate having a first surface and a second surface
- a continuous conductive layer supported by the second surface
- a plurality of phase-shifting elements formed on the first surface
- wherein at least some of the phase-shifting elements are dual resonance phase-shifting elements
- wherein a phase shift of a reflected microwave beam at a predetermined operating frequency can be set to any value over a continuous 360-degree range by selecting one or more dimensions of the phase-shifting elements.
2 more elements
A system for generating a beam of microwave energy, comprising
- a microwave energy source
- a beam director to direct energy received from the microwave energy source into a beam of microwave energy having a predetermined operating frequency, the beam director including a primary reflector comprising
- a dielectric substrate having a first surface and a second surface
- a continuous conductive layer supported by the second surface
- a plurality of phase-shifting elements formed on the first surface
- wherein at least some of the phase-shifting elements are dual resonance phase-shifting elements
- wherein one or more dimensions of the phase-shifting elements are varied across an extent of the primary reflector to vary a local phase shift of a reflected microwave beam over a continuous 360-degree range.
4 more elements
A method of generating a beam of microwave energy, comprising
- generating microwave energy having a predetermined operating frequency
- forming the microwave energy into a beam with a beam director, the beam director including a primary reflector comprising
- a dielectric substrate having a first surface and a second surface
- a continuous conductive layer supported by the second surface
- a plurality of phase-shifting elements formed on the first surface
- wherein at least some of the phase-shifting elements are dual resonance phase-shifting elements
- wherein one or more dimensions of the phase-shifting elements are varied across an extent of the primary reflector to vary a local phase shift of a reflected microwave beam over a continuous 360-degree range.
4 more elements
Dependencies are inferred from the claim text.